lily/grace-engraver-group.cc

   1 /*
   2   grace-engraver-group.cc -- implement Grace_engraver_group
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "grace-engraver-group.hh"
  11 #include "lily-guile.hh"
  12 #include "grob.hh"
  13 #include "musical-request.hh"
  14
  15 void
  16 Grace_engraver_group::start ()
  17 {
  18 }
  19 /*
  20   We're really finished with this context. Get rid of everything.
  21  */
  22 void
  23 Grace_engraver_group::finish ()
  24 {
  25   calling_self_b_ = true;
  26   removal_processing ();        // ugr. We'd want to have this done by our parents.
  27   for (int i=0; i < announce_to_top_.size (); i++)
  28     {
  29       Engraver::announce_grob (announce_to_top_[i]);
  30     }
  31
  32   for (int i=0; i < typeset_us_.size (); i++)
  33     {
  34       Engraver::typeset_grob (typeset_us_[i]);
  35     }
  36   typeset_us_.clear ();
  37   calling_self_b_ = false;
  38 }
  39
  40 void
  41 Grace_engraver_group::finalize ()
  42 {
  43   Engraver_group_engraver::finalize ();
  44 }
  45
  46 void
  47 Grace_engraver_group::announce_grob (Grob_info inf)
  48 {
  49   announce_info_arr_.push (inf);
  50   // do not propagate to top
  51   announce_to_top_.push (inf);
  52
  53   inf.elem_l_->set_grob_property ("grace", SCM_BOOL_T);
  54 }
  55
  56 void
  57 Grace_engraver_group::typeset_grob (Grob*e)
  58 {
  59   typeset_us_.push (e);
  60 }
  61
  62
  63 Grace_engraver_group::Grace_engraver_group()
  64 {
  65   calling_self_b_ = false;
  66 }
  67
  68 void
  69 Grace_engraver_group::one_time_step ()
  70 {
  71   calling_self_b_  = true;
  72   process_music ();
  73   announces();
  74   pre_move_processing();
  75   check_removal();
  76   calling_self_b_ = false;
  77 }
  78
  79
  80 void
  81 Grace_engraver_group::each (Method_pointer method)
  82 {
  83   if (calling_self_b_)
  84     Engraver_group_engraver::each (method);
  85 }
  86
  87
  88 ADD_THIS_TRANSLATOR(Grace_engraver_group);
  89
  90
  91 /*
  92   don't let the commands trickle up.
  93  */
  94 bool
  95 Grace_engraver_group::try_music (Music *m)
  96 {
  97   bool hebbes_b = try_music_on_nongroup_children (m);
  98
  99   if (!hebbes_b && pass_to_top_b (m))
 100     {
 101       hebbes_b = daddy_trans_l_->try_music (m);
 102     }
 103
 104   return hebbes_b;
 105 }
 106
 107 bool
 108 Grace_engraver_group::pass_to_top_b (Music *m) const
 109 {
 110   if (Span_req * sp = dynamic_cast<Span_req*> (m))
 111     {
 112       if (scm_equal_p (sp->get_mus_property ("span-type"), ly_str02scm ("slur"))
 113           == SCM_BOOL_T)
 114         //      return true;
 115         return false;
 116     }
 117   return false;
 118 }
 119
 120 void
 121 Grace_engraver_group::initialize ()
 122 {
 123   calling_self_b_ = true;
 124   Engraver_group_engraver::initialize ();
 125   calling_self_b_ = false;
 126 }